code: def test_ignore_op(self, xp):
      def impl(x, y):
          z = x + y  # NOQA
          return x
  
      return impl
  
imports: import unittest
  from unittest import mock
  import cupy
  from cupy import testing
  from cupy_tests.core_tests.fusion_tests import fusion_utils
label_desc: Use image node_id 8 for calling the TestOptimizations obj's underlying member method code with example usage: obj.test_ignore_op(xp) and returns: impl, x